CN103367849A - Pin structure of surface-mounted microwave ferrite circulator - Google Patents
Pin structure of surface-mounted microwave ferrite circulator Download PDFInfo
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- CN103367849A CN103367849A CN2013102982537A CN201310298253A CN103367849A CN 103367849 A CN103367849 A CN 103367849A CN 2013102982537 A CN2013102982537 A CN 2013102982537A CN 201310298253 A CN201310298253 A CN 201310298253A CN 103367849 A CN103367849 A CN 103367849A
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Abstract
The invention relates to a pin structure of a surface-mounted microwave ferrite circulator. The pin structure is used for a communication system and comprises a half-open cylindrical cavity body and three pin locating rods, wherein the cavity body is provided with three openings in the side wall of the cavity body; two microwave ferrite wafers, a center conductor, two PCBs, two uniform magnetic slices, a permanent magnet, a gyration stop and a magnetism conductive rotary cover are arranged in the cavity body; each PCB is provided with three fixing lugs corresponding to three pins of the center conductor, the fixing lugs are provided with through holes, the three pin locating rods respectively penetrate through holes of the three pins of the center conductor and the through holes of the fixing lugs of the upper PCB and the lower PCB, and electrical connection is formed by welding with soldering tin; the three pin locating rods keep vertical and conduct accurate locating. The pin structure is simple, accurate in pin locating, stable, high in perpendicularity and good in planeness, and will not deform during the process of transporting and using.
Description
Technical field
The present invention relates to a kind of a kind of surface-mount type microwave ferrite circulator pin configuration for communication system, it is a kind of electronic component that utilizes the ferrite characteristics of non-reciprocity to be made, be mainly used in the mobile communication base station such as GSM, CDMA, TD-SCDMA, TD-LTE and mobile base station, in input, the output isolation of receiving system and emission system power amplifier, switching amplifier and in measuring system, play the decoupling effect.
Background technology
The pin configuration of existing surface-mount type circulator and isolator generally has 3 kinds of modes, a kind of is the pin configuration of " Z " form, its structure is to add by the center conductor extension to be pressed into " Z " and to form, although its structure is simple, but center conductor thickness is generally 0.1-0.25mm, the non-constant of intensity, pin produce and transportation in yielding, the pin rosin joint of client's pcb board and surface-mount type ferrite circulator, pin are offset and the grounded part of cavity such as can not contact with client's pcb board at the defective when causing the client to weld; A kind of structure be capillary directly welding in the conductor, the method is because inner wire is yielding, Pin locations easily produce dislocation and the pin perpendicularity relatively poor, in use easily produce the phenomenons such as rosin joint; Another capillary is fixed on the cavity, and the processing of this kind method cavity and assembly technology are complicated.
Chinese patent 201220042509.9 has proposed the mounted ferrite circulator of a kind of Novel pin structural table, it comprises that sidewall has half open cylindrical cavity of three openings, cavity inner wall is processed with screw thread, in put two silver-plated microwave ferrite disks of single face, establish the center conductor of three pins and electroplate, two polytetrafluoroethylene rings, even magnetic sheet, samarium cobalt permanent magnet body, revolution end and the magnetic conduction spiral cover; Also comprise three flat round pins, three pins of center conductor are equipped with a through hole, three interior and electrical connections of through hole that flat round pin is arranged at respectively three pins.It is applicable to communication system, has that the magnetic circuit closure is good, leakage field is little, need not adhesive and screw, is easy to miniaturization, integrated level is high, reliability is high, bear that power is large, temperature range is wide, the device overall performance is good, be easy to assembling, is suitable for large-scale production.Then, still there is the relatively poor and easy problem that produces dislocation of pin perpendicularity in it.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and a kind of simple in structure, pin registration, stable, perpendicularity is high, flatness is good a kind of surface-mount type microwave ferrite circulator pin configuration be provided.
The present invention solves the scheme that its technical problem adopts:
A kind of surface-mount type microwave ferrite circulator pin configuration, comprise that sidewall has half open cylindrical cavity and three pin backstays of three openings, described cavity inner wall is processed with screw thread, in cavity, be provided with two silver-plated microwave ferrite disks of single face, electroplate and pin are provided with the center conductor of through hole, two fixing pcb boards of pin, two even magnetic sheets, permanent magnet, revolution ends and the magnetic conduction spiral cover, described center conductor is clipped in the not centre of silvered face of two microwave ferrite disks, respectively overlap a fixedly pcb board of pin around two microwave ferrite disks, even magnetic sheet is placed on the microwave ferrite disk silvered face, permanent magnet is placed on the even magnetic sheet, revolution only is placed on the permanent magnet, magnetic conduction spiral cover and cavity screw by threaded engagement, three pins of described center conductor are in the cavity outside, the pcb board of described fixedly pin is provided with corresponding with three pins of described center conductor three fixing ears, on described fixedly ear, the corresponding through hole that is provided with of three pins with described center conductor, described three pin backstays run through respectively described center conductor three pins through hole and up and down two fixedly the fixedly ear of the pcb board of pin through hole and weld with scolding tin and to form electrical connection, described three pin backstays keep vertical and accurate location.
As preferably, the through hole of three pins of described three pin backstays and described center conductor and up and down two fixedly be interference fit between the through hole of the fixedly ear of the pcb board of pin.
As preferably, described cavity is integrated.
As preferably, the integral structure that described three pin backstays form for the cylinder of two coaxial different-diameters up and down; The through hole of three pins of described center conductor and up and down two fixedly in the through hole of one fixedly ear in the pcb board of pin and three the pin backstays the less cylinder of diameter be complementary, up and down two fixedly in the through hole of the fixedly ear of another in the pcb board of pin and three the pin backstays the larger cylinder of diameter be complementary; Described be complementary be interference fit.
The pcb board that the present invention is provided with fixing pin substitutes the polytetrafluoroethylene ring in the original structure, and be provided with corresponding with three pins of described center conductor three fixing ears at pcb board, on described fixedly ear, with the corresponding through hole that is provided with of three pins of described center conductor.Described three pin backstays are inserted respectively by the mode of interference fit described center conductor three pins through hole and up and down two fixedly the fixedly ear of the pcb board of pin through hole and weld with scolding tin and to form electrical connection, guaranteed perpendicularity and the flatness of pin, also guaranteed that pin can not be out of shape simultaneously in transportation and use procedure.
Particularly, the integral structure that forms for the cylinder of two coaxial different-diameters up and down when three pin backstays of the present invention, and with the through hole of three pins of described center conductor and two fixedly in the situation of the through hole interference fit of the fixedly ear of the pcb board of pin up and down, its structure is more reasonable, reliable.
In the present invention, the setting of pcb board makes center conductor and ferrite wafer be able to accurate location.
The substantive distinguishing features of technical solution of the present invention and progressive being mainly reflected in:
1. the through hole interference fit of three of pin backstay and center conductor pins and with the through hole interference fit of the fixedly ear of pcb board up and down, make pin accurate positioning, stable, perpendicularity is high, flatness good.
2. since center conductor and ferrite wafer locate by pcb board, both center accurate positionings, welding and testing and measuring technology are simple, the operability height.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1 is a kind of vertical view of surface-mount type microwave ferrite circulator pin configuration.
Fig. 2 is a kind of decomposing schematic representation of surface-mount type microwave ferrite circulator pin configuration.
Fig. 3 is a kind of schematic perspective view of surface-mount type microwave ferrite circulator pin configuration.
Among the figure, 1-magnetic conduction spiral cover, the 2-revolution ends, the 3-permanent magnet, 4-spares magnetic sheet, 5-microwave iron oxygen, 6-PCB plate, 7-center conductor, 8-pin backstay, 9-cavity.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
A kind of surface-mount type microwave ferrite circulator of the present invention pin configuration mainly ends 2 by magnetic conduction spiral cover 1, revolution, permanent magnet 3, and even magnetic sheet 4, microwave ferrite 5, pin backstay 8, center conductor 7, fixedly the pcb board 6 of pin and cavity 9 form.Cavity 9 is half unlimited circular integrated structure, have three to be mutually 120 degree open slots, three pins of center conductor 7 are mutually 120 degree, guide to outside the cavity 9 by three open slots of cavity 9, center conductor 7 electroplates have three through holes on three pins of center conductor 7.Pcb board 6 is provided with corresponding with three pins of center conductor 7 three fixing ears, and fixedly ear is provided with through hole.Three pin backstays 8 respectively with the through hole interference fit of three pins of center conductor 7 and with the fixedly ear of pcb board 6 up and down on the through hole interference fit.Center conductor 7 is clipped between two microwave ferrites 5, and two even magnetic sheets 4 are placed on the microwave ferrite 5, and permanent magnet 3 is placed on the even magnetic sheet 4, and revolution ends 2 and is placed on the permanent magnet 3, and magnetic conduction spiral cover 1 is by being threaded in the cavity 9.Wherein, the outside that pcb board 6 is set in microwave ferrite 5 makes the through hole interference fit of microwave ferrite 5 and center conductor 7 center-aligned and three pin backstays 8 and the fixedly ear of pcb board 6, when magnetic conduction spiral cover 1 screwed in, the revolution of putting into ended the mutual turn of 2 storerooms can prevent from screwing in because of spiral cover the time and causes mutual dislocation between material deformation and the material.The impedance of three ports is 50 Ω, and the Surface Mount circulator can be single-unit or more piece.
Concrete assembly method is as follows: first cavity 9 is put into assembling jig, put into an even magnetic sheet 4, put into a slice pcb board 6, microwave ferrite 5 is bumped in the ring of pcb board 6, again three pin backstays 8 are put into through hole and the interference fit of the fixedly ear of pcb board 6, put into again center conductor 7, the wherein through hole of three of center conductor 7 pins and three pin backstay 8 interference fit, put into pcb board 6, the through hole of the fixedly ear of upper pcb board and three pin backstay 8 interference fit, upper microwave ferrite 5 is bumped in the ring of upper pcb board 6, then put into successively even magnetic sheet 4, permanent magnet 3, revolution ends 2, screw in magnetic conduction spiral cover 1, carry out at last center conductor 7 pins and 8 welding of pin backstay.
In sum, be designed with on three pins of center conductor 7 through hole and with pin backstay 8 interference fit, realize electrical connection, because center conductor 7 and pin backstay 8 adopt interference fit and weld, so the location of three pins is quite accurately with stable; Because three pins adopt up and down pcb board 6 to clamp and be interference fit, the perpendicularity of three pins accurately and the flatnesses of three pins stable; Because microwave ferrite 5 is to be embedded in the ring of pcb board 6 up and down, so the concentricity of center conductor 7 and microwave ferrite 5 is accurate, assembly technology is simple, and operability is high.Three lead-in wires of the present invention are guided to outside the cavity 9 and with pin backstay 8 and are welded, pin backstay 8 directly links to each other with client's pcb board circuit, power and size are applicable to mobile communication base station, compared with the prior art, have that the magnetic circuit closure is good, leakage field is little, need not adhesive and screw, be easy to miniaturization, integrated level is high, reliability is high, bear that power is large, temperature range is wide, the device overall performance is good, be easy to assembling, is applicable to large-scale production.
The above embodiment limits the present invention never in any form, and all employings are equal to replaces or the formed technical scheme of equivalent transformation form, all belongs to protection scope of the present invention.
Claims (4)
1. surface-mount type microwave ferrite circulator pin configuration, comprise that sidewall has half open cylindrical cavity (9) and three pin backstays (8) of three openings, described cavity (9) inwall is processed with screw thread, in cavity (9), be provided with two silver-plated microwave ferrite disks of single face (5), electroplate and pin are provided with the center conductor (7) of through hole, two fixing pcb boards of pin (6), two even magnetic sheets (4), permanent magnet (3), revolution ends (2) and magnetic conduction spiral cover (1), described center conductor (7) is clipped in the not centre of silvered face of two microwave ferrite disks (5), two microwave ferrite disks (5) respectively overlap a fixedly pcb board of pin (6) on every side, even magnetic sheet (4) is placed on the microwave ferrite disk silvered face, permanent magnet (3) is placed on the even magnetic sheet (4), revolution ends (2) and is placed on the permanent magnet (3), magnetic conduction spiral cover (1) screws by threaded engagement with cavity (9), three pins of described center conductor (7) are in cavity (9) outside, it is characterized in that: the pcb board of described fixedly pin (6) is provided with corresponding with three pins of described center conductor (7) three fixing ears, on described fixedly ear, the corresponding through hole that is provided with of three pins with described center conductor (7), described three pin backstays (8) run through respectively described center conductor (7) three pins through hole and up and down two fixedly the fixedly ear of the pcb board of pin (6) through hole and weld with scolding tin and to form electrical connection, described three pin backstays (8) keep vertical and accurate location.
2. surface-mount type microwave ferrite circulator pin configuration according to claim 1 is characterized in that: the through hole of three pins of described three pin backstays (8) and described center conductor (7) and up and down two fixedly be interference fit between the through hole of the fixedly ear of the pcb board of pin (6).
3. surface-mount type microwave ferrite circulator pin configuration according to claim 1, it is characterized in that: described cavity (9) is integrated.
4. surface-mount type microwave ferrite circulator pin configuration according to claim 1 and 2 is characterized in that: the integral structure that described three pin backstays (8) form for the cylinder of two coaxial different-diameters up and down; The through hole of three pins of described center conductor (7) and up and down two fixedly in the through hole of one fixedly ear in the pcb board of pin (6) and three the pin backstays (8) the less cylinder of diameter be complementary, up and down two fixedly the larger cylinder of through hole and the middle diameter of three pin backstays (8) of the fixedly ear of another in the pcb board of pin (6) be complementary; Described be complementary be interference fit.
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| CN201310298253.7A CN103367849B (en) | 2013-07-17 | 2013-07-17 | Pin structure of surface-mounted microwave ferrite circulator |
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| CN201310298253.7A CN103367849B (en) | 2013-07-17 | 2013-07-17 | Pin structure of surface-mounted microwave ferrite circulator |
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| CN103367849B CN103367849B (en) | 2015-05-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928734A (en) * | 2014-04-29 | 2014-07-16 | 捷考奥电子(上海)有限公司 | Shell of circulator and isolator and processing technology thereof |
| CN104167583A (en) * | 2014-08-22 | 2014-11-26 | 苏州迈授电子通讯科技有限公司 | Circulator of non-homogeneous microwave ferrite structure |
| CN107994306A (en) * | 2017-11-20 | 2018-05-04 | 北京无线电测量研究所 | A kind of double-layered central conductor coaxial high power ferrite circulator |
| CN108631033A (en) * | 2018-06-12 | 2018-10-09 | 西南应用磁学研究所 | Minimize SIW surface-mount type circulators |
| WO2020042092A1 (en) * | 2018-08-30 | 2020-03-05 | 深圳市华扬通信技术有限公司 | Ultra-small circulator |
| CN113555655A (en) * | 2021-09-03 | 2021-10-26 | 南京机电职业技术学院 | Lumped parameter circulator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928734A (en) * | 2014-04-29 | 2014-07-16 | 捷考奥电子(上海)有限公司 | Shell of circulator and isolator and processing technology thereof |
| CN104167583A (en) * | 2014-08-22 | 2014-11-26 | 苏州迈授电子通讯科技有限公司 | Circulator of non-homogeneous microwave ferrite structure |
| CN104167583B (en) * | 2014-08-22 | 2016-05-25 | 苏州迈授电子通讯科技有限公司 | The circulator of non-homogeneous microwave ferrite structure |
| CN107994306A (en) * | 2017-11-20 | 2018-05-04 | 北京无线电测量研究所 | A kind of double-layered central conductor coaxial high power ferrite circulator |
| CN108631033A (en) * | 2018-06-12 | 2018-10-09 | 西南应用磁学研究所 | Minimize SIW surface-mount type circulators |
| CN108631033B (en) * | 2018-06-12 | 2023-08-15 | 西南应用磁学研究所 | Miniaturized SIW surface-mounted circulator |
| WO2020042092A1 (en) * | 2018-08-30 | 2020-03-05 | 深圳市华扬通信技术有限公司 | Ultra-small circulator |
| US11063332B1 (en) * | 2018-08-30 | 2021-07-13 | Shenzhen Huayang Technology Development Co., Ltd. | Subminiature circulator |
| CN113555655A (en) * | 2021-09-03 | 2021-10-26 | 南京机电职业技术学院 | Lumped parameter circulator |
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